After the Qin Dynasty to Han Dynasty. The Ming Dynasty and Sui Dynasty dynasty that ruled the land north long, such as the Bei Wei. House of hohenzollern-sigmaringen Dynasty Le moment. Jin Dynasty, etc. are all used to build the same.A wall built in the Ming Dynasty, start West City Jia Yu Kuan of the county, Gansu to east city Shan Hai Guan Of the county, Hebei Province, approximately in length, 12000 Li route through the wall of this line with the line of the Qin Dynasty are not the same!No matter when the Qin Dynasty, Ming Dynasty, a wall full of difficulties. The wall a thousand li mainly built on a high mountain Construction materials, there are several sizes. There may be dozens of small weight scale(1 scale = half a kilogram. Approximately) at that time, no car, no train, no crane, no tools for heavy lifting, lifting heavy articles. Thousands of weighing the lineage from the hillside to the top of the mountain is indeed difficult to depict the mostBadaling (near Beijing) thousands of people rebuilding when dozens of preceding in time 1 years while only 200 meters, look back in the Ming Dynasty. The ruling of the country than 200 years. History of the construction of walls in those days.200 meters must be spent several years
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